Device for introducing sulphite cellulose liquid into furnaces



E. WIRTHFREY DEVICE FOR INTRODUCING SULPHITE CELLULOSE LIQUID INTOFURNACE S 3 Sheets-Sheet 1 Filed July 1-4, 192E:

Dec. 9, 1924. 1,518,723

' E. WlRTH-FREY DEVICE FOR INTRODUCING SULPHITE CELLULOSE LIQUI FiledJuly 1.4, 192i 3 Sheets-Sheet 2 D INTO FURNACES E. WIRTH'FREY DEVICE FORINTRODUCING SULPHITE CELLULOSE LIQUID INTO FURNACES Filed July 1 1925 3Sheets-Sheet 5 Patented Dec. 9, 1924.

ELIAS WIRTH-FREY, OF AARAU, SWITZERLAND.

. DEVICE FOR INTRODUCING SULPHITE CELLULOSE LIQUID INTO FURNACES.

Application filed July 14, 1923. Serial No. 651,539.

To all eohom it may concern:

a citizen of the Swiss Republic, and a resident of Aarau, Switzerland,Herzogstrasse 45, have invented Improvements in a Devlce for IntroducingSulphite Cellulose Liquid into Furnaces, of which the following is aspecification.

Waste sulphite liquids invariably contain considerable amounts ofcombustible constituents, which may be utilized as fuel. My inventionrelates to improvements in apparatus for introducing the sulphite orcellulose liquid into furnaces of any kind suitable for the purpose, inparticular furnaces adapted for mounting the apparatus therein at aplace opposite the charging side.

The difliculties to be overcome in devising an apparatus of the statedkind come up to the following requirements, viz,

1. The apparatus must be protected I against incrustations settling fromthe liq- 2. The apparatus must be constructed in a manner that the totalgrate area will be uniformlystoked and a ready combustion of the solidfuel produced in the furnace from the injected sulphite liquid byevaporation, will be ensured on the grate.

3. The apparatus must be constructed and arranged in a manner that theessential parts thereof are not exposed to destruction or dan'iage dueto the hot fire gases.

My invention relates to an improved apparatus of the statedtypeconstructed and arranged in a manner to comply with and overcome theaforesaid difficulties. To this end the device for supplying thesulphite liquid in an undivided current or jet may be rotatably mountedin or behind a wall or partition having an opening of unvariable sizefor the injection of theliquid and being hollow in order to be cooled byany suitable cooling agent or, preferably, having a cooling jacket forthe purpose.

In some cases it will be advisable to provide the injecting device inthe liquid supply pipe, which preferably may likewise be provided withmeans, such as a jacket or the like, for cooling purposes. In such amodification the said device may be constituted. by a distributing wheelor the like.

The injecting device may also comprise a movable tube or consist of aball or similar spherical body mounted in the said wall or partition orwithin the supply pipe and having an axial bore to serve as an injectingBe it known that I, ELIAS WIRTH-FREY,

passage or outlet.

Referring to the accompanying drawings, which illustrate severalembodiments of my invention to the details of construction, to which theinvention is not limited however.

Figure 1 is a sectional plan view of the embodiment comprising a movabletube arranged behind a cooled partition.

Figure 2 is a sectional. view of a modified construction including aliquid feeding pipe,

Figure 3 is a side view to Figure 2,

Figure 4 is a vertical sectional view of.

a further embodiment of my invention including a distributing wheel inthe plane of the ejecting opening of the liquid supply P P Figure 5 is asection taken on the line DD of Figure 1,

Figure 6 is a sectional view illustrating a modification of theembodiment shown in Figure 1 with the injecting ball mounted in a cooledpartition,

Figure 7 is a sectional view of an embodiment of my invention with theinjecting ball. mounted in the liquid supply pipe,

Figure 8 is a horizontal section taken on the line E-E of Figure 7,

Figure 9 is a sectional view of a further modification with the liquiddistributing wheel located in the liquid supply pipe and behind thecooled partition.

Figure 10 is asection taken on the line "13-13 of Figure 9.

As will be seen from the drawings the injecting device is mounted eitherbehind or within the wall or partition or within a feeding pipe. In theformer case the sulphite liquid will. be discharged through the a wallor partition into the grate and in the latter case the liquid will beejected from the feeding pipe unto the grate through an outlet oroutlets provided for the purpose in the wall of the said feeding pipe.

Obviously the two types of construction may, if desired, be combined ina plant.

In the embodiment shown in Figure 1 the injecting device comprises atube 2 to which the sulphite liquid is supplied in any appropriatemanner, e. g. by means of a suitable conduit, and a spherical body 4:carrying the said tube, as shown, and being iii-Limited in a suitablesupport so as to be movable therein in the manner of an universal jointor a swivel-bearing. As it is of advantage to introduce the sulpose, andthe conical or funnel shape ofthe opening 1 allows of directing the jetover a wide field vertically and horizontally by turning the tube-2 bymeans of its bearing ball 4, as indicated by dotted lines, so that theliquor can be uniformly distributed and spread over the whole of thegrate area.

The combustion of the organic constituents of the sulphite liquidobviously is not possible unless the grate is covered with redhot fuel.The described apparatus for introducing the sulphite liquid ensuresthefollowing advantages. The organic matter of the .liquid cannot burnaway before all the water contained therein has been removed therefromby evaporation. Since the described apparatus causes the jet of liquidto fall down intermittently in regular intervals into the very sameportion or place of the grate area, it is possible to choose and obtain,by determining said intervals or periods in accordance with theparticular quality of the sulphite liquid to befired, conditions atwhich the portion of liquid injected unto a certain portion or place ofthe grate area will have lost its water and be brought to redheatbefore. a fresh portion of sulphite liquid will be thrown to the sameportion or. place of the gate area.

In grate-furnaces, generally speaking, there resides a disadvantage inthat, particularlyin the rear part thereof, portions of the grate arecleared due to total combustion of the fuel at said portions, so thatrushes of air will pass therethrough. Also this disadvantage can beavoided by the use of my improved apparatus inasmuch as just the rearportions of the grate can be filled with solid fuel produced from thesulphite liquid, by properly directing the jet of liquid to saidportions of thegrate, so that clear places in the grate area will beefiiciently eliminated. A

In the embodiment of my invention shown in Figures 2 and 3 the liquidmay be fed either by a hollow shaft or passages (not shown) in the wallimmediately into the pipe 5 which is properly supported in the wall W ofthe furnace and provided withone or a plurality of outlets 6. If desiredthe pipe may be provided with a jacket for coohng purposes. As shown. inFigure 2 the pipe 5 is supported in the wall W by means of a sleeve 8 soas to be rotatable therein.

Integral with the outer end of the said sleeve is a worm-wheel 15engaging with a worm 14 keyed to a horizontal shaft duly supported in abracket and provided with a crank, as will be readily understood oninspection of Figure 3. Y

Loosely mounted on the projecting end of the pipe 5 is a toothed wheel11 in engagement with a pinion 13 keyed to a shaft supported in abearing bracket and having a rope-pulley afiixed to its outer end forimparting motion to the shaft, the toothed gearing 13, 11 and a.toothedwheel 9 keyed to a short shaft supported in a bearing bracket integralwith the sleeve 8; the said wheel 9 is connected with the closed end ofthe pipe 5 by means of a crank and a rod pivotally attached to a ring 10keyed to the closed end of the pipe 5, so as to transmit its rotarymotion to the pipe 5, in order to impart reciprocatory movements to thelatter. By turning the crank of the above described worm wheel drive 14,15 the regular extent or stroke of the reciprocation imparted to thepipe 5 can be manually controlled and determined. Thus the absoluteposition or direction-of the jet will be correspondingly determined bymeans of the controlling device 14, 15, whereas the con-v tinuousreciprocatory movement of the pipe 5 will be brought about by thecrank-wheel 9 and the ring 10 with the aid of the ropepulley receivingmotion from any suitable source of power.

Obviously the movements of the tube 5 may be produced if desired, bymeans of any other suitable driving devices.

As will be seen in Figure 4' a simple outlet is provided in the tube 5of the embodiment shown. Inside in front of the outlet IOU 15 adistributing wheel 16 is keyed to the shaft 7. The wheel 16 is recessedon both sides of its periphery to form inclined radial faces 17positioned at different angles with relation to the plane of the wheel,openings 18 being provided in the wheel for the liquid to passtherethrough,'-as indicated by the arrows in Figure 4.

The'provislon of the wheel 16 on the solid shaft duly supported inbearings within the tube 5 and driven at a desired speed by means of anysuitable driving mechanism ensures an eflicient distribution of thesulphite liquid over the grate area. The jet of liquid forced outthrough the opening 15 will be directed alternately towards the one andthe other side of the plane of the wheel, and since the directing faces17 are locatedat different angles with'relation to the latter also thedirection of the jet on either side of the plane of the wheel willchange at the rotation of the wheel, so that the whole of the grate areawill receive a uniform amdunt or layer of sulphite liquiduninterruptedly in intervals, that is to say, in one direction a o O bythe action of the wheel 16 and in a direction perpendicularly thereto bythe action of the reciprocating mechanism 9, 10.

In the embodiment of my invention shown in Figure 6 the injecting tube20 is tightly screwed into a perforated spherical body 19 rotatablyembedded in a correspondingly shaped recess of the water-cooled wall 21.In front of the spherical portion of the noZ- zle thus formed by the twoparts 19 and 20 the wall is provided with a conical or funnel-shapedopening for the distribution of the injected sulphite liquid over thegrate in accordance with the rotary movements imparted to the sphericalbody by the tube 20 through the agency of suitable actuating mechanismnot shown, which, however, may be of any appropriate kind, as will bereadily understood by those skilled in the art.

In the modification of my invention illustrated in Figures 7 and 8, thespherical body 23 provided for the injection of the sulphite liquid islocated in the liquid feeding pipe. The inner end of the latter isenlarged to form a head 25 having a plug 22 inserted in its wall, inwhich the body 23 is embedded in a similar manner as described withreference to Figure 6. The bore of the body 23 is fitted with anexchangeable insert 24 having a longitudinal or axial bore of adetermined diameter so that by changing the insert and substituting inlieu thereof another one of a different borewidth the cross-sectionalarea of the jet can be controlled and predetermined. The insert isscrew-threaded externally and the bore of the body 23 is threadedinternally for proper insertion of the former. The body 23 is held inplace by means of a plate 26 resiliently supported through springs 28 onboltswith nuts 27. The said bolts are rigidly connected with the wall ofthe head 25 and adapted to freely pass through holes provided for thepurpose in the plate 26. In lieu of the yieldingly mounted plate,however, a single sprin may be employed for holding the spherical body23 in place and'said spring may be disposed in the head 25 to engagewith its one end the flat inner face of the body 23\and' abut with itsother end against the opposite face of the wall of the head.

For cooling purposes the head 25 and the tube may be encased in a waterjacket 29. Two pins 30 are firmly attached to the flat face of the body23 and the projecting ends of the two pins are interconnected by across-' 31, so as to form a yok which is posipiece shaft 32 by tivelyconnected to the driving means of an arm 33.

As to the shaft is imparted an angular movement corresponding to theangle a Figure 7 the spherical body 23 will receive reciprocatorymovements corresponding to an angle 41:, in the lane of the sectionshown in Figure 7. Obviously the shaft may likewise be givenreciprocatory movements lengthwise or axially and, if so, the sphericalbody will reciprocate correspondingly in a plane vertical to the sectionshown in Figure 7 or in the plane of the section illustrated in Figure8.

In the semispherical cavity of the stationary bearing plug 22, a groove34 may be provided in communication with a suitable conduit through anappropriate passage or bore. The conduit may be disposed, as shown inFigure 8, in the wall of the head 25 and extend through the feedingtube. The groove with its conduit may be utilized for lubricatingpurposes and for cooling the parts by water-jacket and from droppingdown to the bottom of the furnace into the ash accumulated thereon. Afurther means serving the like purpose consists in the provision of agroove 35 at the lower portion of the conical opening of the plug 22 forcollecting and removing the escaping sulphite liquid.

with the aid of any suitable conducting means. If desired the inner edge36 of the cooling jacket 29 adjacent to said groove may be enlarged toproject as shown.

In the embodiment of my invention illustrated in Figures 9 and 10 thedistributing member provided in the feeding pipe 37 located behind andadjacent to a cooled partition 43, as hereinbefore described, comprisesa wheel 38 having an annular recess or roove 41 on the one of its twosides interme iate. between its axis and its periphery and the thusformed rim 39 is provided with radial bores-40 of'alternately divergingdirection. The sulphite liquid forced into the tube 37 is allowed todischarge therefrom through the said bores 40 into the outlet 42 andthrough the injecting opening of the wall 43.

While I have described hereinbefore specific constructions of myimproved apparatus for introducing or injecting sulphite celluloseliquid into furnaces, it is obvious that the described and shownconstructions can be modified without departing from the spirit of myinvention. I have not attempted to explain the minute details of thecon; struction of the apparatus and the parts of the furnace and drivingdevices supposed to be in co-operative connection therewith, for it willbe understood by those. to whom this specification is addressed. thatthe parts will necessarily be of the proper size and relationship andwill be properly shaped, mounted and supported according to the tenetsof madrine constructlons nor have I I attempted to illustrate the partsin their sizes and dimensions as manv of the parts are conventionallyshown. I

It is unnecessary to reiterate the operation of the apparatus or theseveral modifications thereof, for the operation of the single parts hasbeen described in details.

What I claim is:

1. A device for introducing sulphite cellulose liquid into a furnace,comprising an injecting member located inside the furnace,

shaped and arranged to direct the liquid in a single jet, and a wallsupporting said member, substantially as described and shown. 7

4. A device for introducing sulohite cellulose liquid into a furnace,comprising an injecting member located inside the furnace shaped andarranged to direct the liquid in a single jet, a wall supporting saidmemher, and means for cooling said wall, substantially as described andshown.

5. A device for the introduction of sulphite cellulose liquid into afurnace, com- Cir prising an injecting member of spherical .shape with acentral bore, a liquid feeding pipe, a correspondingly spherical hearingin or adjacent to the wall of the said pipe for the reception of saidmember and means for cooling the wall, substantially, as described andshown.

6. A device for introducing sulphite cellulose liquid into a furnace,comprising an injecting member located inside the furnace for directingthe liquid in the form of a single jet, a liquid feeding pipe supportingsaid member, means for supporting said pipe in the wallet the furnace soas,..allow the pipe to rotate, and means for rotating the pipesubstantially as described and shown.

' 7. A device for introducing sulphite cellulose liquid into a furnace.vcomprising an injecting member of spherical shape with a central bore, aliquid feeding pipe, a tubular plug inserted into the wall thereof and acorrespondingly spherical bearing in the said plug for the accommodationof said member, substantially as described and shown. v

8. A device for introducing sulphite cellulose liquid into a furnace,comprising an injecting member of spherical shape with a central bore, aliquid feeding pipe, a tubular plug inserted into the wall thereof totightly fit therein, a correspondingly spherical bearing in the saidplug for the accommodation of said member. and means for cooling thesaid pipe, substantially as described and shown.

9. A device for introducing sulphite cellulose liquid into a furnace,comprising an I injecting member of spherical shape having a centraldischarge bore, a liquid feeding pipe, a tubular plug in thewallthereof, I

a correspondingly spherical bearing in the plug to accommodate for thesaid member.

a resilient means adapted to yieldingly hold the said member in intimatecontact with the bearing in the'plug, and means for cooling the saidpipe -substantially as described and shown. v

11. A device for introducing sulphite cellulose liquid into a furnace,comprising an injecting member of spherical shape having -a centraldischarge bore, a liquid feedingpipe, a tubular p ug inserted into thewall of said pipe, a correspondingly spherical bearing provided in theplug for the accommodation of said member, a resilient means for holdingthe latter in yielding contact with the bearing in. the plug, a shaftwithin the pipe, anda yoke connected with the shaft and with thespherical member, substantially asdescribed and shown.-

12. A device for introducing sulphite cellulose liquid into a furnace,comprising an in ectin member of spherical shapewith a central ischargebore, a liquid feeding plpe.

a tubular plug inserted into the wall of the pipe, a correspondinglyspherical bearing provided in the plug for the accommodation of saidmember, a resilient means for holding the latter in yielding touch withthe bearing in the plug, a shaft within the pipe a yoke in connectionwith the said shaft and with the spherical member, and means for coolingthe feeding pipe, substantially as described and shown.

13." A device for introducing sulphite cellulose liquid into a furnace,comprising an injecting member of spherical shape with a centraldischarging hole, a liquid feeding pipe, a tubular plug inserted intothe wall of insert embedded in the discharging hole of the said memberand having an axial bore of a predetermined width, substantially asdescribed and shown.

14. A device for introducing sulphite cellulose liquid into a furnace,comprising an injecting member of spherical shape having a centraldischarging hole, a liquid feeding pipe, a tubular plug inserted intothe wall of the pipe, a correspondingly spherical bearing in the saidplug for the reception of the said member, a resilient means holding thelatter in yielding contact with the bearing in the plug, an exchangeableinsert in said member, having an axial bore, and a groove in the bearingsurface of the plug, substantially as and for thepurpose set forth.

15. A device for introducing sulphite cellulose liquid into a furnacecomprising an injecting member. of s herical shape having a centraldischarging liole, a liquid feeding pipe, a tubular plug inserted intothe wall of the pipe, a correspondingly spherical bearing in the plugfor the reception'of said member, a resilient means holding the latterin yielding contact with the bearing in the plug, an exchangeable insertin the said member, having an axial bore, a cooling jacket surroundingthe feeding pipe, and a groove between the contacting faces of the plugand the jacket, substantially as and for the purpose set forth.

.16. A device for introducing sulphite cellulose liquid into a furnace,comprising an, injecting member'of spherical shape having a centraldischarging hole, a liquid feeding pipe, a tubular plug inserted intothe wall of the pipe, a correspondingly spherical bearing in the plugfor the reception of the said member, a cooling jacket surrounding thepipe, a discharge opening in the jacket in front of the tubular plug, agroove between the contacting faces of the plug and the jacket, and aprojecting edge at the inner side of the discharge opening of thejacket, substantially asand for the purpose set forth.

ELIAS WIRTH-FREY.

